and the evidence is very, very slim that you can point to that shows the efficacy of any of the -- >> for a lot of things. a vitamin shop. you could question where is the beef. but for herbalife, i want to ask the president, what is your one product that you can demonstrate efficacy that it really will help my health and my life or whatever it is with the supplements that you have. but the whole industry st fraught with people that take a thousand times of the amount of vitamin b that you need. >> i've been prone to taking more than i need. >> yeah, but most vitamins -- >> i know, the excess washes away. >> right. the cohen ziems and the reaction that you need there for the reaction, but you only need the amounts that you need for it to happen. anything over and above that is superfluous. and it goes out in your pee. so i'm not saying you shouldn't be able to make money with it. in fact, there have been some people who have made a lot of money. herb greenberg has a great documentary, which i watched yesterday online. >> he's focusing on herbalife, which is perfect for him. >> he's bee